{
  "manageEntity": {
    "action": "Save",
    "entityId": "960916",
    "entityType": "Track",
    "nonce": "0x085b2405900aa7445057f4895bcdb73f4333e91396a12719692fd9f7a5017beb",
    "signature": "0x822df8fd3fdd5cab544b23c560a61c63b3abf4e304e9dc34b426771c185bba9c7c380bf790411eb937dc803d096927b8a7d806025e0fa0ff2f548248b65bd17d1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}